Enum MathFidelity 

pub enum MathFidelity {
    LoFi,
    HiFi2,
    HiFi3,
    HiFi4,
}

The Tensix matrix engine’s math fidelity: how many FPU passes a bf16 multiply gets (LoFi = 1 … HiFi4 = 4). ttnn picks it by a heuristic (HiFi2 with no program config, LoFi the moment one is passed); LOGOS makes it an explicit knob, printed by the emitted program and recorded on every ledger row.

Variants

LoFi

HiFi2

HiFi3

HiFi4

Implementations

impl MathFidelity

pub fn as_str(&self) -> &'static str

The identifier tt-metal’s MathFidelity:: enum uses — also the token on the LOGOS_MM_PASS line.

pub fn parse(s: &str) -> Option<Self>

Parse the same identifier (the harness’s LOGOS_TT_FIDELITY).

pub fn fpu_passes(&self) -> u32

FPU passes per multiply — the cost the fidelity buys accuracy with.

Trait Implementations

impl Clone for MathFidelity

fn clone(&self) -> MathFidelity

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for MathFidelity

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl PartialEq for MathFidelity

fn eq(&self, other: &MathFidelity) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for MathFidelity

impl Eq for MathFidelity

impl StructuralPartialEq for MathFidelity